Nature “The Animal House” at 7 pm
Animals build homes for reasons very similar to our own, but they’ve been doing it for much longer. From a small depression in the sand to an elaborate, multi-chambered tunnel – animal structures can be simple or architectural marvels. In each case, the goal is the same – protection from predators and a nearby source of food. These structures, whether a nest, a burrow or a mound, are also the site of great dramas and extraordinary behaviors. From master builders like termites and beavers, to master decorators like the bowerbird, which places colorful flowers at the entrance to its nest, “The Animal House” will be a global look at the “homelife of wildlife.”

NOVA “Making Stuff Cleaner” at 8 pm
From carbon nanotubes to artificial skin, our world is poised at the frontier of a revolution in materials science as far-reaching as the biotech breakthroughs of the last two decades. This series explores how materials changed history and are shaping the future, ranging from cost-effective fuel cells and solar panels to quantum computers and ultra-light automobiles. The New York Times’ technology correspondent and best-selling author David Pogue brings his trademark goofball humor and techie zeal to this exploration of the future of “stuff.” Each episode explores the talent, luck and determination that can turn a wild idea into a cutting-edge material or high-tech breakthrough. Making Stuff Cleaner – Host David Pogue is on a quest to clean up, using new green materials to build and power the devices of the future. Batteries grown from viruses, plastics made of sugar and solar cells that cook up hydrogen are just the beginning of a new generation of clean materials.

NOVA “Making Stuff Smarter” at 9 pm
From carbon nanotubes to artificial skin, our world is poised at the frontier of a revolution in materials science as far-reaching as the biotech breakthroughs of the last two decades. This series explores how materials changed history and are shaping the future, ranging from cost-effective fuel cells and solar panels to quantum computers and ultra-light automobiles. The New York Times’ technology correspondent and best-selling author David Pogue brings his trademark goofball humor and techie zeal to this exploration of the future of “stuff.” Each episode explores the talent, luck and determination that can turn a wild idea into a cutting-edge material or high-tech breakthrough. Making Stuff Smarter – An army tanker truck that heals its own bullet wounds. An airplane wing that changes shape as it flies. Clothing that can monitor its wearer’s heart rate, health and mood. Host David Pogue looks into the growing number of smart materials that can respond, change and even learn.